Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS Shreveport, LA

April 10, 2021Claiborne Parish, Lincoln Parish, Union Parish, Louisiana; Union County, Arkansas

NWS Shreveport, LA issued this special weather statement at Apr 10, 2021, 12:41 AM CDT for Claiborne Parish, Lincoln Parish, Union Parish, Louisiana; Union County, Arkansas. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 10, 2021, 12:41 AM CDT (05:41 UTC)
Expired: Apr 10, 2021, 1:30 AM CDT
In force: 49 min
Issued by: NWS Shreveport, LA

Counties Union County, AR, Claiborne Parish, LA, Lincoln Parish, LA, Union Parish, LA

The radar

The Shreveport radar (KSHV), 153 km from the middle of the area, began a volume at 05:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 5.7 hours before the alert went out and 144 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 148 J/kg
Mixed-layer CIN: -321 J/kg
Mixed-layer LCL: 2441 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 329 m²/s²
0-3 km storm-relative helicity: 421 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Shreveport, LA wrote its last area forecast discussion before this special weather statement went out at Apr 9, 10:56 PM CDT, 1 hour 45 minutes earlier.

Area forecast discussion, Apr 9, 10:56 PM CDT, 1 hour 45 minutes before

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Hazardous weather outlook, Apr 9, 8:49 PM CDT, 3 hours 52 minutes before

Hazardous Weather Outlook
National Weather Service Shreveport LA
849 PM CDT Fri Apr 9 2021

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-101100-
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
849 PM CDT Fri Apr 9 2021

This Hazardous Weather Outlook is for portions of south central
Arkansas, southwest Arkansas, north central Louisiana, northwest
Louisiana, southeast Oklahoma, east Texas and northeast Texas.

.DAY ONE...Tonight...

Scattered thunderstorms are rapidly developing across the
ArkLaTex. Some of these storms may be severe, with damaging winds,
large hail, and tornadoes possible. Additional thunderstorm
development is possible this evening over portions of East Texas
and North Louisiana, ahead of a severe squall line that will
develop over Eastern Oklahoma and quickly shift southeast across
the region from mid evening through the overnight hours. The
severe weather threat will become more pronounced with this squall
line, with damaging winds, large hail, isolated tornadoes, and
locally heavy rainfall possible. These storms will diminish from
northwest to southeast late tonight.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday...

Scattered showers and isolated thunderstorms will be possible
across the region Tuesday through Thursday. However, no hazardous
weather is expected.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel...amateur radio
operators...and storm spotters will be needed this afternoon
through tonight across the region.

09

In the hours before

Local storm report, Apr 10, 12:32 AM CDT, 9 minutes before

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Special weather statement, Apr 10, 12:32 AM CDT, 9 minutes before

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Local storm report, Apr 10, 12:33 AM CDT, 8 minutes before

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Local storm report, Apr 10, 12:34 AM CDT, 7 minutes before

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Local storm report, Apr 10, 12:35 AM CDT, 6 minutes before

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Special weather statement, Apr 10, 12:41 AM CDT, 0 minutes before

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The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 9, 7:05 PM CDT	Special Weather Statement	SHV	Nacogdoches	40 min
Apr 9, 7:07 PM CDT	Special Weather Statement	SHV	Gregg	53 min
Apr 9, 7:11 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Harrison, Rusk	27 min
Apr 9, 7:35 PM CDT	Special Weather Statement	SHV	Shelby	40 min
Apr 9, 8:08 PM CDT	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches, San Augustine	42 min
Apr 9, 8:36 PM CDT	Special Weather Statement	SHV	Panola, Shelby	54 min
Apr 9, 10:02 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Nacogdoches, Rusk	58 min
Apr 9, 10:48 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River	42 min
Apr 9, 10:50 PM CDT	Severe Thunderstorm Warning	SHV	Nacogdoches, Rusk, San Augustine, Shelby	55 min
Apr 9, 11:12 PM CDT	Special Weather Statement	SHV	Camp, Cass, Franklin, Morris, Titus	48 min
Apr 9, 11:18 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	42 min
Apr 9, 11:42 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Cass, Franklin, Gregg, Harrison, Marion and 3 more	63 min
Apr 9, 11:47 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Gregg, Smith, Upshur, Wood	43 min
Apr 10, 1:05 AM CDT	Special Weather Statement	SHV	Harrison	40 min
Apr 10, 1:28 AM CDT	Special Weather Statement	SHV	Cherokee	47 min
Apr 10, 1:54 AM CDT	Special Weather Statement	SHV	Nacogdoches	51 min
Apr 10, 1:55 AM CDT	Special Weather Statement	SHV	Shelby	50 min
Apr 10, 2:07 AM CDT	Special Weather Statement	SHV	Angelina	38 min
Apr 10, 2:38 AM CDT	Special Weather Statement	SHV	San Augustine	52 min
Apr 10, 2:50 AM CDT	Special Weather Statement	SHV	San Augustine	40 min
Apr 10, 3:04 AM CDT	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches, Sabine, San Augustine	56 min
Apr 9, 7:03 PM CDT	Special Weather Statement	SHV	Jackson	42 min
Apr 9, 7:11 PM CDT	Severe Thunderstorm Warning	SHV	De Soto, Natchitoches, Red River, Sabine	64 min
Apr 9, 7:18 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Jackson, Ouachita	42 min
Apr 9, 7:30 PM CDT	Special Weather Statement	SHV	Union	45 min
Apr 9, 7:35 PM CDT	Flash Flood Warning	SHV	Caldwell, Jackson, Lincoln, Ouachita, Union, Winn	3 hr
Apr 9, 7:35 PM CDT	Special Weather Statement	SHV	Webster	40 min
Apr 9, 7:40 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Natchitoches, Red River, Winn	42 min
Apr 9, 7:50 PM CDT	Special Weather Statement	SHV	Claiborne, Lincoln	40 min
Apr 9, 7:55 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Grant, Jackson, Natchitoches, Winn	65 min
Apr 9, 7:57 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Ouachita	22 min
Apr 9, 8:33 PM CDT	Special Weather Statement	SHV	Claiborne, Webster	42 min
Apr 9, 8:43 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Ouachita, Winn	62 min
Apr 9, 8:50 PM CDT	Special Weather Statement	SHV	Natchitoches	55 min
Apr 9, 9:32 PM CDT	Special Weather Statement	SHV	Grant, LaSalle	58 min
Apr 9, 10:27 PM CDT	Severe Thunderstorm Warning	SHV	Grant, LaSalle	40 min
Apr 9, 10:40 PM CDT	Special Weather Statement	SHV	Ouachita, Winn	50 min
Apr 10, 12:23 AM CDT	Special Weather Statement	SHV	Bossier, Caddo, Webster	67 min
Apr 10, 12:32 AM CDT	Special Weather Statement	SHV	LaSalle	43 min
Apr 10, 12:45 AM CDT	Severe Thunderstorm Warning	SHV	LaSalle	45 min
Apr 10, 12:46 AM CDT	Special Weather Statement	SHV	Sabine	29 min
Apr 9, 11:24 PM CDT	Tornado Warning	SHV	Little River	36 min
Apr 9, 11:40 PM CDT	Tornado Warning	SHV	Hempstead, Little River, Miller, Nevada	50 min
Apr 9, 11:55 PM CDT	Severe Thunderstorm Warning	SHV	Columbia, Hempstead, Lafayette, Miller, Nevada	65 min
Apr 9, 10:13 PM CDT	Special Weather Statement	SHV	McCurtain	47 min

Nearby

Special Weather Statements in Louisiana, 2021 Special Weather Statements in Arkansas, 2021 Every special weather statement in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.